Well, kiddo, a long time ago in a country called Poland, some very bad people did something very, very terrible. This was called the Budy Ossowskie Massacre.
Budy Ossowskie was a small town with lots of people who were Jewish. These people were different from the other people who lived there, and unfortunately, some people didn't like that. The bad people were called Nazis and they wanted all the Jewish people to leave or die. They didn't care that the Jewish people were just like them, with families and feelings and dreams.
One day, the Nazis came to Budy Ossowskie and rounded up all the Jewish people they could find. They made them go to a big hole in the ground, and then they started shooting them, over and over again. It was very scary and very sad. The Jewish people were innocent and didn't deserve to die like that.
Afterwards, the Nazis tried to hide what they had done, but people found out about it anyway. It became known as the Budy Ossowskie Massacre, and it is remembered as a very dark time in history. We should always remember the innocent lives that were lost, and work to make sure nothing like that ever happens again.